We present a method for the computation of the renormalized group beta-functions and the central charge in two-dimensional supersymmetric sigma models in a gravitational background. The two-loops results are exhibited. We use the Pauli-Villars regularization which preserves supersymmetry and permits an unambiguous treatment of the model with torsion. The central charge we derive for a general manifold is in agreement with expression found on group manifolds.

Beta functions and central charge of supersymmetric sigma models with torsion

GUADAGNINI, ENORE;
1987

Abstract

We present a method for the computation of the renormalized group beta-functions and the central charge in two-dimensional supersymmetric sigma models in a gravitational background. The two-loops results are exhibited. We use the Pauli-Villars regularization which preserves supersymmetry and permits an unambiguous treatment of the model with torsion. The central charge we derive for a general manifold is in agreement with expression found on group manifolds.
Guadagnini, Enore; Mintchev, M.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/12648
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